house mouse vs Pacific Spiny-rat

Mus musculus compared with Proechimys decumanus

Key Differences

house mouse is Least Concern while Pacific Spiny-rat is Near Threatened.

Taxonomic Classification

Rank	house mouse	Pacific Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family	Muridae (Mice & Rats)	Echimyidae
Genus	Mus (House Mice)	Proechimys
Species	Mus musculus	Proechimys decumanus

Evolutionary Relationship

house mouse and Pacific Spiny-rat share a common ancestor at the Order level: Rodentia. (Rodents)

View Order: Rodentia

Conservation Status

house mouse

LC — Least Concern

Trend: Stable →

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

Attribute	house mouse	Pacific Spiny-rat
Diet	Omnivore	—
Average Lifespan	2 years	—
Average Length	9 cm	—
Average Weight	20 g	—

Habitat & Geographic Range

house mouse

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (9 countries), Asia (13 countries), Europe (41 countries), North America (14 countries), Oceania and the Pacific (12 countries), and South America (10 countries).

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

house mouse

Among the most widespread and numerous mammals on Earth, house mice originated in South Asia and have accompanied human civilization across every continent except Antarctica. Weighing just 15–25 g, they are highly adaptable omnivores capable of surviving on minimal food and water. As the world's most commonly used laboratory animal, the house mouse has contributed to virtually every branch of biomedical research. They cause significant agricultural damage globally.